Light travels at an approximate rate of 1.9 × 10 mi/sec. There are about 3.2 × 107 seconds in a year. About how many miles does light travel in a year? Write the answer in scientific notation. Express the answer to the exact decimal place. (- point
To find out how many miles light travels in a year, we need to multiply the speed of light by the number of seconds in a year.
Speed of light = 1.9 × 10 mi/sec
Number of seconds in a year = 3.2 × 10^7 seconds
Multiplying these values together gives us:
1.9 × 10 × 3.2 × 10^7 = 6.08 × 10 × 10^7 = 6.08 × 10^8
Therefore, light travels approximately 6.08 × 10^8 miles in a year.
To calculate the total distance light travels in a year, we need to multiply the speed of light (1.9 × 10 mi/sec) by the number of seconds in a year (3.2 × 10^7 seconds).
1.9 × 10 mi/sec * 3.2 × 10^7 seconds
To multiply numbers in scientific notation, we multiply the coefficients and add the exponents:
(1.9 * 3.2) × (10 * 10^7) = 6.08 × 10^8
So, light travels approximately 6.08 × 10^8 miles in a (earth) year.
To find out how many miles light travels in a year, we can multiply the speed of light (1.9 × 10 mi/sec) by the number of seconds in a year (3.2 × 10^7 seconds).
1.9 × 10 mi/sec * 3.2 × 10^7 seconds
To multiply numbers in scientific notation, we multiply their coefficients (1.9 * 3.2) and add their exponents (10 * 10^7):
1.9 * 3.2 = 6.08
10 * 10^7 = 10^8
So, the calculation becomes:
6.08 * 10^8 mi
Since we want to express the answer to the exact decimal place, the answer is:
608,000,000 miles